Method and device for correcting distorted images
An image, distortion-free technology, applied in the field of image processing, can solve the problem of low positioning accuracy
Active Publication Date: 2020-12-25
合肥九川智能装备有限公司
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[0005] This application provides a method and device for correcting distorted images to solve the problem of low positioning accuracy of existing image correction methods
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[0075] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0076] see figure 1 , a flowchart of a method for correcting a distorted image.
[0077] An embodiment of the present application provides a method for correcting a distorted image, wherein the correction method includes:
[0078] S100. Obtain a template image of the reference PCB board;
[0079] S200. Obtain an actual image of the PCB board to be detected;
[0080] S300. Determine a first localization kernel and a second localization kernel according to the ...
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The present application provides a method and device for correcting distorted images, wherein the correction method includes: obtaining a template image of a reference PCB board; obtaining an actual image of the PCB board to be detected; and determining a first positioning kernel based on the template image. and a second positioning kernel, and correspond the first positioning kernel and the second positioning kernel to the actual image; correspondingly transform the first positioning kernel and the second positioning kernel according to the horizontal and vertical resolution ratios is the first distortion-free positioning kernel and the second distortion-free positioning kernel; calculate the image rotation angle according to the first distortion-free positioning kernel and the second distortion-free positioning kernel; according to the first distortion-free positioning kernel, the The second distortion-free positioning kernel and the image rotation angle are used to calculate the image offset; according to the horizontal and vertical resolution ratio, the image rotation angle and the image offset, the actual image is transformed into a real image . It can effectively solve the problem of low positioning accuracy of existing image correction methods.
Description
technical field [0001] The present application relates to the technical field of image processing, in particular to a method and device for correcting a distorted image. Background technique [0002] In recent years, with the gradual increase of people's demand in the fields of communication, consumer electronics and computers, the integrated circuit industry has developed by leaps and bounds. Products in the Printed Circuit Board (PCB) industry are constantly developing towards ultra-thin, small components, and high-density, so the quality requirements are gradually increasing. However, due to the high density and high complexity of the PCB itself , high-performance development trend and other characteristics increase the difficulty of PCB board quality inspection. [0003] In the prior art, defects on the PCB board are usually detected by using an automatic optical inspection (Automatic Optical Inspector, AOI). The AOI system uses machine vision and image processing tech...
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IPC IPC(8): G06T5/00
CPCG06T2207/30141G06T2207/10004G06T5/80
Inventor 刘士清姚毅曾亚军
Owner 合肥九川智能装备有限公司